Scared but hopeful

I had my 3rd round of iui on June 13th and like an impatient person I took a few home test before my blood test on the 27th. They all came back negative so I resigned myself to another failed attempt and another round of iui. Friday they called and said it was positive but my numbers were low and they wanted me to have another blood test this morning. I'm so scared that I'm going to go in and do this and get a phone call that it was a false alarm or that it didn't work. I haven't told anyone yet because it's not confirmed in my mind til the 2nd results.